Hitler didn't inspire mass murder he authorised it and encouraged it, the flaw is the make up that caused him to do that, it also included suicide, it's still a flaw as I posted some are and were more fatal. One could argue it's a form of mental instability but that's a good get out of jail argument which I disagree with.
Vietnam historically has never been a democracy it was a colony, conquered nation and then a rebellious colony that succumbed to being almost a Chinese colony that has emerged as a typical far east state overrun with corruption and poverty under the title of a Socialist Republic, at least they don't call themselves a Democratic Republic like a few others.
One could argue that ostracising these countries doesn't actually help the non governing population and can actually cause more harm, most countries that have overthrown oppressive regimes by rebellion normally end up with an even more oppressive regime and the inheritor of the regime is normally far from the fight in a safe haven encouraging the soon to be more oppressed.